MobAnimationController.java 文件源码

TextureRegion pollAnimation(float delta) {
    // update the animation
    animationTime += delta;
    // fetch the current frame
    String textureName = state.name().toLowerCase() + "-" + mob.getDirection().name().toLowerCase();
    Animation<TextureRegion> ani = animations.get(textureName);
    if(animationTime > ani.getAnimationDuration()) animationTime = 0; // reset the animationTime to prevent any possibility of overflow
    TextureRegion frame = ani.getKeyFrame(animationTime, true);

    // reset the animation
    prevState = state;
    state = requestedAnimations.poll();
    if(state == null) state = AnimationState.IDLE;
    if(state != prevState)
        animationTime = 0; // if we're going to render a new animation, we should start it from the beginning, I think. Though, I could see this not ending up being a good idea... NOTE: this is not just set to zero because it seems this causes a divide by zero error when fetching the keyframe.
    requestedAnimations.clear();

    return frame;
}